Maintenance Procedures; Air Cleaner Maintenance; Exhaust System Maintenance - Toro 51603 Maintenance And Repair Manual

MAINTENANCE PROCEDURES
AIR CLEANER MAINTENANCE
Check and clean the foam air cleaner element every
eight operating hours, and the felt air cleaner once a
season.
1. Remove the air cleaner cover by pressing up on
the bottom of the cover to release the lower
mounting tab and pressing in on front of the cover
to release the upper tab.
DO
NOT FORCE.
2.
Carefully remove the filter clip or filter retainer.
Remove the foam filter and felt filter (Figures 6
and
7).
Air Cleaner Housing
Press Here to Remove
Figure 6
Air Cleaner Housing
Felt Filter
3. Wash the foam filter in a soap and water solution
and dry thoroughly. If the filter shows any sign of
damage or deterioration, replace
it.
4. Saturate the foam filter with one teaspoon (5ml)
SAE 30 oil. Squeeze the filter to distribute the oil
evenly and to remove excess oil. A damp element
is necessary to ensure proper functioning of the
air cleaner.
5. Inspect the felt filter. If
it
is dirty, wash
it
in clean
solvent and air dry
it.
If the filter shows any sign
of ,damage
it
must be replaced.
6. Reinstall the felt filter, foam filter, and filter clip or
retainer in the air cleaner housing (Figures 6 and
IMPORTANT: Make sure the peg in the air cleaner
housing fits through the small hole in the felt
filter. Both filters must cover the opening in the
air, cleaner housing.
7. Reinstall the air cleaner cover by pressing the
cover in, and up, behind the choke lever and then
press the lower mounting tab into the hole in the
engine housing.
DO
NOT FORCE.
7).'
EXHAUST SYSTEM MAINTENANCE
NOTE: Some states require that a spark arrester be
attached to the muffler if the trimmer is to be used in
forested areas, or on other public lands. Be sure to
check your local state laws before using your gaso-
line powered trimmer.
An important part of the maintenance procedure for
all two-cycle engines is the cleaning or decarboning
of the exhaust system. This is done to assure the
unobstructed flow of exhaust gases and particles
from the combustion chamber. A severely carboned
muffler, spark arrester screen. and/or exhaust port
will cause poor starting and low power output of the
trimm'er engine.
1. Remove the muffler shield, screen, muffler and
2.
Soak the screen in solvent and remove the carbon
build-up with a wire brush, or replace the screen.
3.
Clean the muffler baffle holes inside the muffler
exhaust gasket.
with a screwdriver.
4. Check the cylinder exhaust
port. If necessary,
remove the carbon deposits from the port using a
wiiden stick (Fig. 8).
Figure 8
4